Helpful summary by analytics guru Avinash Kaushik about aligning landing pages' purpose to the visitor's intent, summarised in six tips. The moral:if you want to have high performing web pages make sure that you:
"1. Have a clear understanding of what the purpose of that page is and
2a. a clearer understanding of what drove customers to the page and
2b. what they want to accomplish to ensure that
3. #1 and #2 are in alignment.
Glory will be yours!"